FR2542213A1 - CONVERTIBLE LIQUID FILTER, AND LIQUID FILTRATION REPORTED COMPONENTS FOR THIS FILTER - Google Patents

Abstract

CONVERTIBLE LIQUID FILTER, AND PARTS FOR LIQUID FILTRATION FOR THIS FILTER. A PIECE 52 CARTRIDGE FILTRATION ELEMENTS 70 MAY BE SUBSTITUTED FOR A FILTRATION BAG SUSPENDED INSIDE A BODY 12 OF A LIQUID FILTER 10, IN ORDER TO CONVERT THIS FILTER FROM A BAG TYPE TO A CARTRIDGE TYPE FILTER. THE LIQUID ENTERING FILTER 10 THROUGH INLET 18 CROSSES EITHER THE FILTRATION BAG, OR AT LEAST ONE FILTRATION CARTRIDGE 70 AND IS FILTERED IN THE CROSS-THROUGH ELEMENT BEFORE LEAVING THE FILTER BODY THROUGH OUTLET 20. EACH CARTRIDGE 70 IS CARRIED BY A MAST 66 WHOSE CENTRAL PASSAGE 68 OPEN UNDER A SUPPORT PLATE 60 FIXED TIGHTLY TO THE BODY 12. APPLICATION TO THE TRANSFORMATION OF BAG FILTERS INTO CARTRIDGE FILTERS, WITHOUT CHANGING THE FLOW DIRECTION OF THE LIQUIDS.

Description

This invention relates to a liquid filter comprising a part

  reported that converts the filter from a type of filter bag filter to a type of filter to

filtration cartridge.

  The current state of the art relating to filters includes both filter bag type filters

  filter cartridge type filters.

  Most of the bag type are shown in US Pat. Nos. 4,259,188 and 3,814,261. The cartridge type filters are shown and described in US Pat.

  U.S. Patents 3,319,793 and 3,050,193.

  However, in the state of the art relating to filters, there is no known device for using a

  unique filter envelope capable of receiving indifferently

  filter bag or filter cartridge without the need to reverse the flow direction

liquid through the filter.

  It is an object of this invention to provide an insert bearing a cartridge and which is intended to be mounted within an existing casing for a filter bag. The invention is illustrated by two modes.

of realization.

  The first of these embodiments comprises a ring which is carried inside the body of the filter so as not to interfere with the use of a filter bag in the body. In order to transform the filter from one type to another. a cartridge type bag, the bag is removed and a base plate that carries one or more cartridges

is attached to the body ring.

  The second of these embodiments of the composite filter

  takes a liquid-proof basket with a substantially cylindrical side wall and a bottom wall The bottom wall of the basket supports at least one cartridge disposed above an outlet of the filter

  transform the bag-type filter into a cartridge type

  the bag is removed and the basket is mounted inside the

  of the filter body while being supported under

the filter input.

  Accordingly, it is an object of this invention to provide a novel and useful liquid filter which can be converted from use with a filter bag to use with a filter cartridge. Another object of the invention is to provide a liquid filter which can be used either with filter bags or with filter cartridges without changing the direction of liquid flow through the filter.

  filter or without deflecting this flow of liquid.

  Another object of the invention is to provide a filter which can be converted from use with a bag of

  filtration for use with a filter cartridge

  in a simple and quick way.

  Other objects of this invention will flow from

  the following description, given in a non-restrictive manner, of

  two exemplary embodiments shown in the accompanying drawings, in which: FIG. 1 is an elongitudinal cross-sectional view of an embodiment of the filter shown equipped with a filter bag; FIG. 2 is a longitudinal sectional view of the body; of the filter of Figure 1 shown equipped with several filter cartridges, the section being taken along the line 2-2 of Figure 4, a cartridge and its support mast having parts torn off to allow a clearer representation, the FIG. 3 is a horizontal sectional view taken along line 3-3 of FIG. 1; FIG. 4 is a horizontal sectional view taken along line 4-4 of FIG. 2; FIG. filter cartridge and its support mast, in detail, with parts

  torn off in order to make clear its construction

  FIG. 6 is a perspective view of the filter cartridge insert of the filter of FIG. 1, FIG. 7 is a longitudinal cutaway view of a second embodiment of the illustrated filter equipped with a filter bag. FIG. 8 is a longitudinal sectional view of the body of the filter of FIG. 7 shown, equipped with several filter cartridges, the section being taken along the line 8-8 of FIG. 10, a cartridge and its mast. FIG. 9 is a perspective view of the filter cartridge insert used in the filter of FIG. 8, with portions broken away in order to clarify the representation, and FIG. Figure 30 is a horizontal sectional view taken

  along the line 10-10 of Figure 8.

  The preferred embodiments shown

  -do not be considered as giving a representative

  DETAILED DESCRIPTION OF THE INVENTION These embodiments have been chosen and described in order to best explain the principles of the invention and its application as well as its use. practice so as to enable the person skilled in the art to put the invention

implemented.

  A first embodiment of the filter is shown in Figures 1 to 6 of the drawings. The filter 10 comprises a body 12 having a side wall 14 and a bottom wall.

  16, which delimit a chamber The body 12 comprises an opening

  fice 18 and an outlet 20 The orifice

  18 is located adjacent to an upper edge

  22 of the side wall 14 The side wall 14 of the body 12 has a double wall structure adjacent to the inlet port 18, and in this portion it has a wall portion 24 inwardly offset. and which is connected to the outer portion of the side wall 14 on both sides of and just below the inlet port A shoulder 26 is formed in the wall portion 24 and extends continuously and circularly by a Shoulder 28 formed in the outer part of the side wall of the body 12 A basket 30 with a mesh structure is suspended inside the body 12 by its neck folded outwards 32 which rests on shoulders 26 and 28 of the body which are adjacent to the upper end of this body A filter bag 34 is fitted inside the basket 30 and is supported at its upper edge 38 by the shoulders 26 and 28 of the body 12 and on the collar 32 of the basket A cover 40 fits over the upper edge 22 of the body and, when attached to the body by clamping nuts 41 (only one of which is shown), provides peripheral and sealed contact with an O-ring 42 housed in a housing. peripheral groove formed in the upper edge of the lateral wall 14 of the body The cover 40 comprises

  a part 46 shifted upwards and which is arranged

  above the portion 24 of the side wall 14 of the body which is shifted inwards, and these two shifted parts form, in combination, a passage 48 leading from the inlet port 18 to the inside of the bag 34 by extending upward and passing over the upper edge 38 of the bag 34. This embodiment is more fully described and explained in US Pat.

3,814,261.

  The adaptation of the filter 10 to be used with an insert 52 of a cartridge type filter comprises the peripheral and liquid-tight attachment of a ring 54, by the circumferential edge thereof, to the lateral wall 14 of the body, adjacent to the bottom 16 The ring 54 is arranged so that the basket 30 will preferably not be in contact with the ring when the filter 10 is used as a bag-type filter. from the ring 54 to the side wall 14 of the body is preferably made by welding The ring 54 has an annular body defining a central opening 56 and comprises at least one, but preferably two, tapped holes 58 in its body The central opening 56 allows

ú 542213

  the passage of the fluid towards the outlet orifice 20.

  The insert 52 of the filter comprises a base plate 60 having apertures 62 which are intended to be aligned with the bores 58 of the ring when the base plate rests on the ring 54. The bolts 64 pass through the openings 62 of the filter. plate and are screwed into the threaded bores 58 of the ring in order to fix the base plate 60 to the ring 54 The base plate 60 is preferably sealingly applied against the ring 54 by means of an O-ring 59 Central tubular poles and with a mesh structure 66 are supported by the base plate 60 and are directed upwards from this base plate. Each mast 66 is such that its central passage 68 is aligned with an opening through the base plate 60. masts

  66 are each adapted to support a cartridge 70 of filament

  Replaceable processing, which includes a cylindrical frame 72 with a fiber-wrapped mesh structure 74 Each cartridge

  Filtration can be carried out according to several construc-

  Each frame 72 slides on a mast 66 A

  cap 76 covers the upper end of each car-

  filter key 70 A coil spring 80 is mounted above each cap 76 When the lid 40 is closed, the caps 76 are pressed against the cartridges by the compressed springs 80, in order to seal

  the upper ends of passages 68 of the cartridges

  pressing and pressing the cartridges against the base plate 60. The filter 10 can be used as a bag-type filter, as shown in FIGS. 1 and 3, or it can be converted into a cartridge-type filter shown. In FIGS. 2 and 4, in its bag-type filter configuration, the flow of liquid enters the body 12 through the inlet 18, passes over the offset wall 24 of the

  body and over the upper edge 38 of the bag 34 and is

  In this bag, in which it is filtered through the bag, and the flow then leaves the body of the filter through the outlet 20, as indicated by the arrows 81 in Figure 1 by lifting the basket 30 and the bag 34 and removing them from the body 12, then introducing the filter cartridge insert 52 into the body and bolting its base plate 60 to the ring 54, the filter 10 can be transformed into a filter of the type The flow of liquid then enters the body through the inlet 18 and passes over the offset wall 24 of the body, providing at least partial filling of the body above the base plate 60 and the Body ring 54 The liquid then passes through each filter cartridge 70 and openings 67 are provided at the support mast 66, then the liquid flows through the central passage 68 of the mast and then passes through the base plate 60 from the patch and leaves the body 12 passing through exit 20, as indicated by arrows 83 on the

figure 2.

  A second embodiment of the filter is shown in FIGS. 7 and 8, and in this embodiment, an inlet 18 'of the filter 10' is formed in the lid 40 'of the filter. The filter 10' comprises a body 12 'having a side wall 14 'and a bottom wall 16' An outlet 20 '

  is formed in the bottom 16 'of the body A circular shoulder

  84 is formed in the upper edge 22 'of the wall

  14 'A filter bag 82 is suspended in the

  of the body 12 'by the support, on the shoulder 84, the edge

  upper 90 with permanent deformation of the bag

  that 92 is housed in a groove 94 formed in the upper edge 22 'of the side wall, and this O-ring 92 provides a sealed peripheral contact between the cover 40' and the upper edge of the side wall When the cover 40 'is fixed to the body 12 ', for example by tightening the nuts 96, the upper edge 90 of the bag is compressed against the shoulder 84 It should be understood that the sealing of the bag 82, at its upper edge, can be realized in any convenient manner known Similarly, a basket could be used with the bag

  82, as shown in Figure 1.

254221 È 3

  The adaptation of the filter 10 'so that it is used as a cartridge type filter is achieved by removing the bag 82 from the body 12', and introducing the filter cartridge insert 98 (shown individually in Fig. 9). The filter cartridge insert 98 comprises a cylindrical, liquid impermeable basket 100 having a side wall 102 and a bottom wall 104. The side wall 102 of the basket terminates at its upper end by a collar 106. turned towards the outside When the basket 100 is introduced into the body 12 ', the collar 106 of the basket, in contact with the lid 40' and compressed by the latter, is supported by the shoulder 84 of the body and applied in a sealed manner against the latter by an O-ring 105 The bottom 104 of the basket carries central poles 108, tubular and structural

  mesh, which are directed upwards from the bottom.

  Each central mast 108 has a central passage 110 which is aligned with an opening through the bottom 104 of the basket Each central mast 108 is intended to support a

  filter cartridge 111 which comprises a cylindrical frame

  The cartridge frame 112 slides on a central mat 108 and is covered by a cap 116 for closing.

  tightens the upper end of its central passage 110.

  A helical spring 120, in contact with the cover 40 ', bears against each cap 116 in order to sealingly seal the underlying cartridge and to anchor this

last in position.

  When used as a bag-type filter, as shown in Fig. 7, the liquid, as indicated by the arrows 121, enters the filter 10 'through the inlet 18', passes directly into the bag 82, in which it is filtered as it flows through the bag into the body 12 '' The fluid leaves the body 12 'through the outlet 20' The filter transform 10 'of the filter configuration from type to bag with the cartridge type filter configuration is achieved by removing the lid 40 ', in

-2542213

  lifting the bag 82 and withdrawing it from the body 12 ', placing the basket 100 in its position inside the body, and putting the lid back in place The liquid, as indicated by the arrows 123 in FIG. 8 , then enters the filter 10 'through the inlet 18', flows into the

  basket 100, through which it passes through each cartridge of

  111 and the openings 109 formed in each central support mast 108, then flows into the central passage 110 of the mast From the central passage 110 of the mast, the liquid passes through the bottom 104 of the basket and flows into

  the body 12 ', that it leaves through the outlet 20'.

  It must be understood that a patch 52

  filter cartridges and a ring 54 can be used.

  10 in the filter 10 'shown in Fig. 7, and that a filter cartridge insert 98 can be used in the filter 10, shown in Fig. 1. In addition, it is possible for a base plate 60 such as that shown in Figure 6, but without central poles 66, could be permanently attached to the filter body, under the filter bag When it is desired to convert the filter into a cartridge-type filter, the bag and the basket , if the latter is used, are removed and the central poles 66 screwed into tapped drainage openings in the base plate 60 It must also be

  that the invention is not limited to the characteristics

  description of the above, and that those skilled in the art

  can make variants without departing from the scope of the

present invention.

25422 t 3

Claims (11)

  1 Convertible liquid filter comprising, in combination   naison, a body (12,12 ') filter and a removable cover (40,40'), characterized in that it further comprises two internal filtering means (34,82; 70,111) usable as desired,   said filter body (12, 12 ') enclosing a chamber delimiting   formed by lateral (14,14 ') and bottom (16,16') walls and having an open top end delimited by said side wall (14, 14 '), a liquid inlet (18, 18') ) and an outlet of the liquid (20,20 ') leading the liquid respectively into and out of the chamber, said cover (40,40') being intended to cover the entire open upper end of the chamber. body (12, 12 ') so as to come into sealing contact with said body (12, 12'), each of said filtering means (34, 82, 70, 111) being intended to position itself independently of the other   within said body chamber (12, 12 ') by authorizing   passing the flow of liquid from said inlet port (18, 18 ') to said outlet port (20, 20') for filtering liquid flowing between said ports (18, 18 ',, 20'); ), one of said filtering means comprising a mesh-like bag member (34, 82), and the second of said filtering means having a cartridge-like member (70, 111) of a mesh-like material and of tubular form.   2 Convertible filter according to claim 1, characterized   characterized in that the second of said filtering means comprises   takes a wall (60; 102,104), said wall forming a liquid impermeable barrier between said inlet port (18,18 ') and said outlet port (20,20') when said second filter means is disposed at interior of said body chamber (12,12 '), at least one erected mast-shaped mast (66,108) being carried by said wall (60; 102,104) to support said cartridge member (70,111) therein said body chamber (12,12 '), and a longitudinal flow passage (68,110) in said mast (66,108) being aligned with an opening in said wall (60; 102,104) for delimiting a path flow of liquid between said inlet port (18, 18 ') and said orifice output (20,20 ').   Convertible filter according to claim 2, characterized   characterized in that said body (12) comprises a recessing shoulder portion disposed within said body chamber (12), said wall including a base plate (60) for covering said shoulder portion and to be fixed to it.   Convertible filter according to claim 3, characterized   characterized in that said recessed shoulder portion is a ring (54) secured by its outer periphery to said wall   lateral (14) of said body chamber (12).   Convertible filter according to claim 2, characterized in that said wall forms a bottom wall (104) of a cylindrical, liquid impervious and open top member (100), said mast (108) being directed   upwardly from said bottom wall (104) to the interior   said cylindrical member (100) to support said cartridge member (111), the filter comprising means   (84) associated with said body chamber (12 ') to support   said cylindrical member (100) or bag (82) is   of said body chamber (12 ').   Convertible filter according to claim 5, characterized   characterized in that said support means is a shoulder (84) provided by said side wall (14 ') of the body (12'), each of which is the cylindrical member (100) and   the bag (82) having a collar (90, 106) facing outwards   at its upper end and intended to be supported   on said shoulder (84) of the body (12 ').   Convertible filter according to claim 6, characterized   characterized in that said cartridge member (111) is mounted   on said mast (108), a cap (116) being mounted on the   central opening (110) of said mast (108) at the end   upper portion of said cartridge member (111) for sealing said upper end of the cartridge member (111); 25422 13   Convertible filter according to claim 2, characterized   characterized in that said cartridge member (70,111) is mounted on said mast (66,108), a cap (76,116) being mounted on the central opening (68,110) of said mast (66,108) at the upper end said element in a cartridge   (70, 111) for sealing said end   upper half of the element into a cartridge.   Convertible filter according to claim 8, characterized   characterized in that it comprises return means (80, 120) carried between said cap (76, 116) and said cover (40,   '), when the lid is in the closed position   sealing said body (12, 12 ') in order to apply said   cap (76,116) downwardly against said cartridge element che (70,111).   Liquid filter insert (98) for converting a bag-type filter (10 ') into a cartridge-type filter (111), characterized in that it comprises a basket ( 100) impermeable to liquids and having a sidewall (102) and a wall   bottom (104), said basket (100) being intended to be inserted   in a filter body (12 ') in place of said bag (82) and allowing flow communication between the inlet (18') and the outlet (20 ') of the filter (10). '), erected means (108) within said basket (100) for supporting a cartridge filter member (111) within the basket (100), the bottom wall (104)   basket having an opening, said cartridge element   che (111) being supported above the opening of the bottom wall (104) of the basket so that liquid entering the basket (100) from the filter inlet (18 ') ( 10 ') flows through said cartridge member (111) and said opening of the bottom wall (104) of the basket to exit said body (12') of the filter (10 ') by   passing through the outlet (20 ') of the filter.   11 Liquid filter insert (52) for use in converting a filter (10)   bag type (34) of a cartridge type filter (70), which is   characterized in that it comprises a base plate (60) impervious to liquids and intended to be introduced into a body (12) of filter (10), instead of said bag (34), allowing communication between the inlet (18) and the outlet (20) of the filter (10), means (66) being carried by   base plates (60) to support a cartridge element   (70) on said base plate (60), the latter having an opening, and said cartridge member (70) being supported above said opening of the base plate (60), so that a flow liquid entering said body (12) of the filter (10) passes through said cartridge member (70) and said opening of the base plate (60) to exit said filter body (12) from the filter said outlet (20) of the filter.